Overview

The Codebase element specifies where service classes and resources can be (down)loaded from. The Codebase element also has an attribute called "Adaptive". The Adaptive="yes" declaration triggers the Service Grid to change the codebase in the following way :

1. If the service has the adaptive codebase property set, and the codebase is http based, the GSM will check if the code can be served from the codeserver that has been started by the GSM. If the jars required to create the service can be served by the codeserver coupled with the GSM, adjust the codebase in the ServiceElement to reflect the new codeserver address. So what does this really mean? Basically it means that if the GSM can serve up the jars the service needs, it will adjust the service's codebase to be able to provision the services. This is needed if the codeserver that was used to originally access the jars goes down.
2. The GSC will also attempt to adjust the service's codebase. The GSC will determine if the codebase can be served from the codeserver that has been started by the GSC. This means if the GSC can serve up the the download jars (the xx-dl.jar) it will adjust the codebase accordingly.

Determination of "serving" the jars from either of the codeservers is done by computing a message digest for the jars (ComputeHttpmd). If the message digest of the jars local to the GSM and/or GSC match the message digest of the original URL, then the determination is made to serve the code from the coedserver the utility (GSM/GSC) has created.

RELATED TOPICS

Declaring Elements Globally in Deployment Descriptor

Declaring Service UI in Deployment Descriptor

Deployment Descriptor Codebase Element

Deployment Descriptor DeploymentSchedule Element

Deployment Descriptor Parameters and Configuration Elements

Deployment Descriptor SharedComponent Element

Deployment Descriptor SLA Element

deploy - Service Grid CLI

Fixed and Dynamic ServiceBean ProvisionType

Injecting Deployment Descriptor Properties into POJOs

POJO Lifecycle in Service Grid

Proactive Cache

redeploy - Service Grid CLI

Rio OperationalString

Service Associations

Service Deployment Descriptor

Service Grid ClassLoader Hierarchy

undeploy - Service Grid CLI

Using Service Grid to Deploy Partitioned Space

Using Service Grid to Deploy Partitioned Space with Backup

Using Service Grid to Deploy Replicated Space

Using Service Grid to Deploy Space

Using Service Grid to Deploy Spring Applications

Using System Properties for Deployment Descriptor Element Values